Improved draft-regulator for locomotives



1 To all whom "it may concern jbeing had tothe accon'ipanying,drawings, .making part of this specication, in which- Figure 1 isa't'rout view, with 'a portion of the front plate removed, showing the interior door. closed. g. 3 is aI vertical section, and

M yinvention relates tothe construction and e 'arrangement of devices for regulating and convey the steam from the'boiler to the steamchest upon the cylinder, andB represen-tsthe to or iiitothe base of the stock l), 'For lightnate an inchy on two below the base of the stack. For heavy-draft thepip'e may termin- .inch or twointo'it. The .exhaust-pipe may v-be straight, as iii-enlarged Fig. 5, or it lmay be cone-like at the bottom, as in Figs. 4 and atB B, the pipe. C is perforated with from ten to fiftecn'-.hol es,j]l, having a diameter-"of lv*about three'eig'hths'of an inch, and passing through -the metal obliquely upward, as seen opened and closed at pleasure by means of a -thimble1circular slide, or valve, F, which can' UNITED STATES PATENT OFFICE' errrnnrr HfeoRr-JETT, orY wnsr MANCHESTER, PENNSYLVANIA.'

IMRBOVED -DPgAFT-REGULA-eroa Foao'coMoT|\f/Es'.

'Specification forming part OFI-letters (Paten of the smoke box and the escape-pipe.' Fig. 2 is a-front vie-w showing the front plate and- 11"igs.4, 5, and 6 .are detached parts.v

controlling the draft through the fire-box and flues by. means of the escapesteam.

In Figs. land 2, A represents the pipes that pipes that convey "the exhaust-steam into the escapepi'pe G. This pipe C extends upward draft engines thel exhaustpipe C muy termi-- ate just'at the base of the, stack, or extend an 6. I prefer the latter form. Just above the lower end, where the pipesenter, as 'shown n. section, Fig. 4, at These holes'fare from. the tire-box to the'smoke-box the `tiragrate, re 'anibuntof fuel.

tNo. 49,555, time November 1o, 1863.

be operated by a rod from the cab. The holes E, instead 'of being formed in the circular part-v .0f the escape pipe, may beformed through a ilat surface at the lower end ofthe pipe Gand covered by a slide valve'. There are a number of modications of this part which might be yintroduced and used with the same. effect as that beforey described, and which embrace the same'generalprinciple. e

The smoke-box is intended to b e practically air-tight, with the-exception of the necessary openings,'ant lk the. exhaust-'pipe O' occupies.

about the center. The iiiues G,which lead of course terminate in the smoke box.. l

Now, .the operation of thisimproveinent is as'follows: If a light draft isdesired, I close lthe holes E by the movement of the'valves F,

so as to cover the holes.. 'If a strongl draft is required, I open the-holes by such amovement A of the valves as to fuucoverthe holes E, and the strength ofthe draft is regulated by the number of' holes that are closed r unclosed, the less number of holes that are opened causing a light drat't,.an'd the strength of the draft increasing as moreand more holes are opened.` In this way the-engineer has complete control xof the -drat't and can 'change it in a momentwhen desirable, and thus procure just suffi'- cient draft to produce complete'combustion of the fuel, without raising theinders from What'I claim as myimprovement to secure by Letters Patent, is'-4 s Providing the escape-pipe C with openings alves F, operating Vsubstanf or holes E andy tially as-andfrthepurpose specified. e PHILLIP H.1'GDRLETT. Witnesses:l Ey f Baumann,- W 1iI.-K. ColtLnfr'r.` e

'sulting in the savingofa large f and desire" 

